CN102618791B - High strength and ductility oil casing with hydrogen sulfide corrosion resistance and manufacturing method for oil casing - Google Patents
High strength and ductility oil casing with hydrogen sulfide corrosion resistance and manufacturing method for oil casing Download PDFInfo
- Publication number
- CN102618791B CN102618791B CN201210120547.6A CN201210120547A CN102618791B CN 102618791 B CN102618791 B CN 102618791B CN 201210120547 A CN201210120547 A CN 201210120547A CN 102618791 B CN102618791 B CN 102618791B
- Authority
- CN
- China
- Prior art keywords
- temperature
- pipe
- hydrogen sulfide
- petroleum casing
- percent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Heat Treatment Of Articles (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
The invention discloses a high strength and ductility oil casing with hydrogen sulfide corrosion resistance and a manufacturing method for the oil casing, and aims to provide an oil casing with high impact resistance and capable of meeting the requirement for exploiting a deep oil-gas layer containing hydrogen sulfide gas and a manufacturing method for the oil casing. The oil casing consists of the following components in percentage by weight: 0.15 to 0.20 percent of C, 0.1 to 0.2 percent of Si, 0.4 to 0.6 percent of Mn, 0.6 to 0.8 percent of Cr, 1.2 to 1.6 percent of Mo, 0.01 to 0.05 percent of Al, 0.002 to 0.05 percent of Ti, 0.05 to 0.10 percent of V, 0.005 to 0.015 percent of Nb, 0.0003 to 0.005 percent of Ca, less than 0.002 percent of B, less than or equal to 0.015 percent of P, less than or equal to 0.005 percent of S, 0.003 to 0.010 percent of N, and the balance of Fe, wherein the adding amount of Mo, V, Cr and Mn satisfies that 12V+1-Mo is more than or equal to 0 and Mo-(Cr+Mn) is more than or equal to 0. According to the oil casing, the content of manganese, chromium and molybdenum is controlled through a comprehensive control formula, and hydrogen sulfide corrosion resistance and impact ductility are improved by optimizing the content of each component.
Description
Technical field
The present invention relates to metallurgical technology field, in particular, relate to a kind of high-strong toughness petroleum casing pipe and manufacture method thereof of hydrogen sulfide corrosion-resistant.
Background technology
The oil fields such as the Sichuan of China, long celebrating, North China, Xinjiang and Jiang-Han Area, and all contain hydrogen sulfide in the hydrocarbon zone in the oil field such as the Barrow horse of the U.S., your gulf of Canadian truncation, according to statistics, the oil-gas field in the world nearly 1/3 contains hydrogen sulfide.
Ordinary casing is when for hydrogen sulfide containing hydrocarbon resources exploitation, sleeve pipe is under the effect of service stress and hydrogen sulfide, tend to stressed brittle failure occur suddenly during far below itself yield strength, the lighter causes string of casing or whole mouthful of well to scrap, severe one can make hydrogen sulfide and oil gas together leak, form blowout, bring great threat to the safety in production of oil-gas field.
Southwestern China portion oil-gas field buries deeply, and drilling depth mainly, in 4000～6000m left and right, reaches more than 7000 meter the most deeply, and 85% gas field is containing H
2s amount is greater than 20mg/m
3, indivedual oil-gas fields containing H
2s amount is up to 493g/m
3, and oil well deep layer temperature reaches 80 ℃ of left and right, makes the residing environment for use of petroleum casing pipe of the corrosion such as water very severe.Therefore, oil-gas field enterprise has higher requirement to the performance of petroleum casing pipe.For this reason, the hydrocarbon resources that exploitation contains hydrogen sulfide now just must adopt the high-quality petroleum casing pipe of the sulfurated hydrogen stress etching-resisting with high-strong toughness.
The process of hydrogen sulfide corrosion petroleum casing pipe, it is generally acknowledged the H of molecular state
2the a large amount of Generation of atoms hydrogen of S is adsorbed by the surface of steel, sleeve pipe uses under strained condition, and by stress induced diffusion, hydrogen gathers formation high pressure by the inclusion in steel (particularly strip MnS is mingled with) and some microscopic defect position, cause stress concentration, finally cause cracking.The yield strength of steel or yield tensile ratio are higher, and the cracking sensitivity of sulfide is also larger, and deformation rate is low, and sulfide cracking sensitivity increases.
Intensity and toughness and hydrogen sulfide corrosion-resistant performance that the high-strong toughness petroleum casing pipe of hydrogen sulfide corrosion-resistant requires steel to have, but the toughness of material and hydrogen sulfide corrosion-resistant performance are affected by the carbide morphology in steel.In order to reduce the carbide on metal lattice, need to reduce the carbon content of steel alloy, but this can reduce the mechanical propertys such as the hardening capacity of material and yield strength.At present, because various alloying elements are controlled separately, easily make the interpolation of alloying element excessive, cause equivalent carbon content too much, reduce on the contrary plasticity and the toughness of petroleum casing pipe, reduced the sulfurated hydrogen stress etching-resisting ability of steel.In addition, in high strength petroleum sleeve pipe, the density of lattice displacement increases, and protium is easy to be stored in lattice displacement place, and then protium easily accumulates in stress concentration position.For this reason, need rational rolling and heat treatment condition, reduce unrelieved stress, improve the yield tensile ratio of material.
Publication number is CN101413088, invention and created name a kind of petroleum casing pipe and manufacture method thereof of sulfurated hydrogen stress etching-resisting that be the petroleum casing pipe of < < sulfurated hydrogen stress etching-resisting and the Patent Application Publication of manufacture method > > thereof, by improving purity and yield tensile ratio and the tempered martensite ratio of steel, crystal grain thinning, reduce unrelieved stress etc., manufacture has petroleum casing pipe and the manufacture method thereof of high-strong toughness and sulfurated hydrogen stress etching-resisting ability, its yield strength is 862～931MPa, tensile strength >=894.2Mpa, unrelieved stress≤150MPa, impelling strength (longitudinally) is below 60J.Because the impact resistance of petroleum casing pipe is not high, under the effect of plus load, easily there are crackle, fracture, flattening deformation etc., affect work-ing life.
Summary of the invention
The present invention is in order to overcome weak point of the prior art, and a kind of needs that can meet the dark hydrocarbon zone exploitation of H 2 S-containing gas are provided, and has sulfurated hydrogen stress etching-resisting ability, the petroleum casing pipe that impact resistance is high and manufacture method thereof.
The present invention is achieved through the following technical solutions:
A kind of high-strong toughness petroleum casing pipe of hydrogen sulfide corrosion-resistant, it is characterized in that, by following compositions, formed by weight percentage: C:0.15～0.20%, Si:0.1～0.2%, Mn:0.4～0.6%, Cr:0.6～0.8%, Mo:1.2～1.6%, Al:0.01～0.05%, Ti:0.002～0.05%, V:0.05～0.10%, Nb:0.005～0.015%, Ca:0.0003～0.005%, B:< 0.002%, P≤0.015%, S≤0.005%, N:0.003～0.010%, the Fe of surplus, Mo wherein, V, the addition of Cr and Mn meets 12V+1-Mo >=0, Mo-(Cr+Mn) >=0.
A manufacture method for the high-strong toughness petroleum casing pipe of hydrogen sulfide corrosion-resistant, is characterized in that, comprises the steps:
(1) batching is smelted:
Adopt sponge iron and steel scrap to do steelmaking feed, with the eccentric stove of electric arc, be fused into molten steel, through external refining and vacuum outgas method, through Ca, process again, the molten steel that obtains manufacturing petroleum casing pipe is by weight percentage: C:0.15～0.20%, Si:0.1～0.2%, Mn:0.4～0.6%, Cr:0.6～0.8%, Mo:1.2～1.6%, Al:0.01～0.05%, Ti:0.002～0.05%, V:0.05～0.10%, Nb:0.005～0.015%, Ca:0.0003～0.005%, B:< 0.002%, P≤0.015%, S≤0.005%, N:0.003～0.010%, surplus is iron, wherein the addition of Mo, V, Cr and Mn meets 12V+1-Mo >=0, Mo-(Cr+Mn) >=0,
(2) above-mentioned continuous casting of molten steel becomes pipe, after pipe is cooling, pack process furnace into, pipe is not less than 10 hours at 1210-1220 ℃ of heating and thermal insulation, the heat centering temperature of pipe is 1120-1150 ℃, pipe hot piercing temperature is 1050～1100 ℃, the finishing temperature of tandem rolling is not less than 1000 ℃, and the finishing temperature of determining reducing and rolling is not less than 950 ℃;
(3) complete the hollow forging of determining reducing and rolling and on cold bed, be cooled to 650-670 ℃, then adopt the thermal treatment process of quenching and combining with 2 tempering, be heated to after quenching temperature, be incubated after 15 minutes, carry out quench treatment, quenchant is oiliness hardening liquid, and quenching temperature is 910 ℃ ± 30 ℃; Tempering temperature is incubated 30 minutes at 680～720 ℃～and 50 minutes, adopt air cooling, double tempering temperature is incubated 60 minutes at 550 ℃～590 ℃～and 90 minutes, air cooling; After petroleum casing pipe thermal treatment, through second heat sizing and hot straightening, process the high-strong toughness petroleum casing pipe that obtains hydrogen sulfide corrosion-resistant, second heat sizing temperature is between 550～600 ℃, and hot straightening temperature is between 500 ℃～540 ℃.
Hardening liquid ensures the speed of cooling of 20 ℃/sec, obtains sufficient martensitic stucture.
The diameter distortion rate of second heat sizing is 3%～5%.
Hot straightening coefficient of draught is the weldless steel tube elastic limit distortion of 0.64～0.77 times.
The present invention has following technique effect:
1, in petroleum casing pipe of the present invention, by Comprehensive Control formula 12V+1-Mo >=0, Mo-(Cr+Mn) >=0, control the content of manganese (Mn), chromium (Cr) and molybdenum (Mo), by the content of Comprehensive Control molybdenum, vanadium, chromium and manganese, realize intensity, hardening capacity, hardness, plasticity and the toughness of improving petroleum casing pipe.Meanwhile, added the elements such as titanium, niobium, nitrogen, improved quenching performance, crystal grain thinning tissue, forms globular carbide.By the component content of optimization design steel alloy, improved ability and the impelling strength of petroleum casing pipe hydrogen sulfide corrosion-resistant.
2, the manufacture method of petroleum casing pipe of the present invention, by Production Technology for Superior Pure Steel, impurity and the gas contents such as the sulphur in reduction steel, phosphorus; Adopt the method for rolling and combined with heat treatment, refine austenite crystal grain; Adopt strict thermal treatment process, obtain uniform tissue and tempered martensite and yield tensile ratio, thereby obtained the steel alloy of sulfurated hydrogen stress etching-resisting superior performance.
3, in petroleum casing pipe of the present invention because molybdenum content obviously increases, and in manufacturing processed, carried out temper 2 times, improved impelling strength, reduced unrelieved stress, controlled yield strength distribution range.
4, the present invention, by adding vanadium and nitrogen crystal grain thinning, reduces manufacturing cost, controls unrelieved stress simultaneously.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.
The high-strong toughness petroleum casing pipe of hydrogen sulfide corrosion-resistant of the present invention is comprised of following compositions by weight percentage: C:0.15～0.20%, Si:0.1～0.2%, Mn:0.4～0.6%, Cr:0.6～0.8%, Mo:1.2～1.6%, Al:0.01～0.05%, Ti:0.002～0.05%, V:0.05～0.10%, Nb:0.005～0.015%, Ca:0.0003～0.005%, B:< 0.002%, P≤0.015%, S≤0.005%, N:0.003～0.010%, the Fe of surplus.For producing the steel with high-strong toughness and corrosion resistance characteristic, make the addition of Mo, V, Cr and Mn meet 12V+1-Mo >=0, Mo-(Cr+Mn) >=0.In high-strength toughness steel, the acicular carbide of separating out reduces the hydrogen sulfide corrosion-resistant of sleeve pipe.For this reason, add vanadium, crystal grain thinning, forms globular carbide, controls hydrogen sulfide corrosion speed, but cost improves.Thereby interpolation nitrogen, control cost.
Acting as of main alloy element:
C：0.15～0.20％
Carbon is carbide forming element, mainly considers that the collocation of intensity and toughness comes carbon content to determine, its anti-H
2s impact is little.Carbon content is too high, and just easily carbide precipitate and generation segregation, can not effectively utilize the performance of other metal, and cause hydrogen sulfide corrosion-resistant ability to reduce.When carbon content is too low, the intensity of material will reduce, and obtain desirable yield strength, will keep certain carbon content.In order to obtain intensity and hydrogen sulfide corrosion-resistant energy equilibrium of forces, carbon content scope control is between 0.15～0.20%.
Si：0.1～0.2％
Silicon has reductive action as reductor, and solution strengthening improves the intensity of steel, improves hardening capacity.When silicone content is lower than 0.10% time, action effect is not obvious; But when silicone content surpasses 0.2%, the action effect of silicon is in state of saturation.Therefore, the content range of silicon is controlled between 0.1～0.2%.
Mn：0.4～0.6％
Manganese can improve hardening capacity and the intensity of steel, solidifies the harmful elements such as sulphur, phosphorus, promote harmful element to grain boundary segregation, but manganese significantly declines crystal boundary linkage force, easily causes that hydrogen causes along brilliant fracture, reduces manganese content and can improve anti-H
2s performance.Its content needs more than 0.4% in the present invention; But when manganese content surpasses 0.6%, the action effect of manganese is in state of saturation.Therefore, the content general control of manganese is in 0.4～0.6% scope.
Cr：0.6～0.8％
Chromium, by increasing hardening capacity, improves the intensity of steel and the corrodibility of resistance to hydrogen sulfide; Have and adjust the function that Carbide Precipitation amount strengthens the intensity of steel, its diffusion carbide is also the strong trap of hydrogen.Make content of its performance effect more than 0.6%, but chromium too high levels, has promoted the amount of separating out of carbide, reduces the hydrogen sulfide corrosion-resistant ability of steel.Therefore, the content general control of chromium is in 0.60～0.80% scope.
Mo：1.2～1.6％
Molybdenum is the most effective anti-H
2s element, form the precipitate of disperse together with sulphur, thereby solid solution sulphur is reduced, the molybdenum carbide of another aspect disperse is the strong trap of hydrogen, thereby make to spread rich long-pending hydrogen amount, greatly reduce, there is hardening capacity and the solution strengthening that improves steel and the performance that reduces hydrogen sulfide corrosion-resistant speed.Make the content of molybdenum performance effect more than 1.20%, but the too high levels of molybdenum, the action effect of molybdenum, in state of saturation, also easily produces microsegregation, needs long High temperature diffusion, increases manufacturing cost.Therefore, the content general control of molybdenum is in 1.20～1.60% scope.
Al：0.01～0.05％
Aluminium has reductive action as reductor, can improve toughness and the processibility of steel.When the content of aluminium is excessive, aluminium-containing alloy thing increases can reduce toughness, and the probability that metallic surface produces defect increases.Therefore, the content general control of aluminium is in 0.01～0.05% scope.
Ti：0.002～0.05％
Titanium can form carbide and nitride, improves the intensity of steel; Solidify the nitrogen in steel, increase the toughness of steel.For obtaining this effect of titanium, need the content of titanium to reach more than 0.002%.But, when the content of titanium surpasses 0.05%, just as thick nitride, exist, reduce halophile corrosive nature.Therefore, the content of titanium is controlled in 0.002～0.05% scope.
V：0.05～0.10％
Vanadium, can crystal grain thinning when temper, forms carbide, improves intensity and the toughness of steel.When the content of vanadium surpasses 0.05%, just can play one's part to the full; But when the content of vanadium surpasses 0.10%, toughness just reduces.Therefore, the content of vanadium is controlled in 0.05～0.10% scope.
Nb：0.005～0.015％
Niobium forms carboritride at high temperature, prevents the coarsening of crystallization, improves intensity and the hydrogen sulfide corrosion-resistant performance of steel.When the content of niobium surpasses 0.005%, just can play a role, but the content of niobium is while surpassing 0.015%, at the microsegregation band easy thick carboritride of generation just, reduce on the contrary hydrogen sulfide corrosion-resistant performance.Therefore, the content of niobium is controlled in 0.005～0.015% scope.
Ca：0.0003～0.005％
Calcium forms sulfide with the reaction of Salmon-Saxl in steel, improves the form of element sulphur, improves the hydrogen sulfide corrosion-resistant ability of steel.When calcium contents surpasses 0.0003%, just can play a role, but calcium contents is while surpassing 0.005%, Jie in steel increases at thing content, and the purity reduction of steel, reduces hydrogen sulfide corrosion-resistant performance on the contrary.Therefore, the content of calcium is controlled in 0.0003～0.005% scope.
B：＜0.002％
The contents level that boron has impurity just can improve the hardening capacity of steel, but add superfluous boron, can in steel, form thick boride, reduces the hydrogen sulfide corrosion-resistant performance of steel.For this reason, the content of boron is controlled in the scope below 0.002%.
P≤0.015％
Phosphorus is the impurity in steel, can cause crystal grain segregation to bring toughness drop.For improving toughness and solidity to corrosion, reduce its content as far as possible.But must consider the cost of steel-making, in order to obtain better hydrogen sulfide corrosion-resistant performance, the content of phosphorus is controlled at below 0.015%.
S≤0.005％
Sulphur is impurity element in steel, reduce its content as far as possible, but must consider the cost of steel-making.For improving toughness and hydrogen sulfide corrosion-resistant performance, the content of sulphur is controlled at below 0.005%.
N：0.003～0.010％，
The elements such as the same aluminium of nitrogen, titanium, niobium, in conjunction with forming nitride, have the effect of strengthening crystal grain thinning, improve intensity and the hardness of steel.Nitrogen content is too high, not only causes the coarse grains of aluminium nitride and titanium nitride, and forms nitride with boron, significantly reduces hardening capacity.Therefore, Control of Nitrogen Content is in 0.003%～0.010% scope.
The manufacture method of the high-strong toughness petroleum casing pipe of hydrogen sulfide corrosion-resistant of the present invention comprises the steps:
(1) batching is smelted
Adopt sponge iron and steel scrap to do steelmaking feed, with the eccentric stove of electric arc (EFA), be fused into molten steel, through external refining (LF) and vacuum (VD) degas method, through Ca, process again, control content and the shape of impurity in steel, improve the purity of steel, the molten steel that obtains manufacturing petroleum casing pipe is by weight percentage: C:0.15～0.20%, Si:0.1～0.2%, Mn:0.4～0.6%, Cr:0.6～0.8%, Mo:1.2～1.6%, Al:0.01～0.05%, Ti:0.002～0.05%, V:0.05～0.10%, Nb:0.005～0.015%, Ca:0.0003～0.005%, B:< 0.002%, P≤0.015%, S≤0.005%, N:0.003～0.010%, surplus is iron.Wherein, the addition of Mo, V, Cr and Mn meets 12V+1-Mo >=0, Mo-(Cr+Mn) >=0.
(2) continuous casting and rolling
Above-mentioned high purity steel water continuous casting becomes pipe, cooled pipe is packed in rotary heating furnace and heated, heating of pipe blank temperature is 1210～1220 ℃, 1120～1150 ℃ of heat centering temperature, 1050～1100 ℃ of hot piercing temperature, the finishing temperature of tandem rolling is not less than 1000 ℃, and the finishing temperature of determining tube reducing is not less than 950 ℃, cooling, sawing.
Ring furnace:
Heating of pipe blank temperature: 1210～1220 ℃, allow the temperature difference: ± 5 ℃, tapping temperature is not less than 1200 ℃.
In order to improve temperature control precision, rotary heating furnace is divided into 7 control regions along the circumferential direction, preheating section accounts for a control region, and heating zone accounts for four control regions, and soaking zone accounts for a control region, discharging section accounts for a control region, wherein, the temperature of preheating section is 540 ± 20 ℃, and the temperature of heating zone is 1210 ± 5 ℃, soaking zone temperature is 1215 ± 5 ℃, and the heating curve of pipe is the progressive para-curve of 1215 ℃.
It is an important ring that the homogenizing of pipe is processed.If heat inhomogeneously, by residual, can there is tissue odds in the microsegregation band that molybdenum and niobium etc. produce when modifier treatment.Especially niobium forms the very competent of carbide, even if a small amount of niobium also can form carbide more than 1 μ m at segregation line, the ability of the resistance to hydrogen sulfide of this carbide is extremely low.Discontented 1200 ℃ of general Heating temperature, niobide can not dissolve completely; Discontented 10 hours of soaking time, microsegregation can not solution disappear.At 1215 ℃ of temperature, insulation is not less than 10 hours, can make the molybdenum homogeneous diffusion of segregation, and niobide more than the size 1 μ m separating out dissolves.
Centering and piercing process:
Adopt heat centering and Mannesmann's method perforation, reduce the perforated shear strain of steel alloy, prevent the defects such as the surface of hollow billet cracks, folding, absciss layer, guarantee geometrical dimension and the form accuracy of hollow billet, 1120～1150 ℃ of heat centering temperature, hot piercing temperature is 1050～1100 ℃.
Continuous rolling process:
The object of continuous rolling process is that perforation process is transferred to the hollow billet coming to be carried out tube reducing, extend and the corresponding wall that subtracts, and improves the rough degree of hollow forging surfaces externally and internally simultaneously, improves evenness of wall thickness.Tandem rolling adopts retained mandrel rolling, controls the draught of each roll of continuous mill, guarantees the precision of pipe.
When the temperature of tandem rolling is during lower than 1000 ℃, the resistance to deformation of hollow billet is excessive, produces instrument abrasion problem.On the other hand, when the temperature of tandem rolling is during higher than 1100 ℃, metal grain is too thick, and hydrogen sulfide corrosion-resistant performance reduces.Therefore, rolling temperature is controlled between 1000～1100 ℃.
Fixed reducing process:
Determine the process that tube reducing process is a hollow body tandem rolling, except plaing a part sizing, general also requirement has larger reducing rate, and general total reducing rate is controlled in 10～25% scopes.The frame number that three rollers are determined reducing rolling mill is 24, and finishing temperature is controlled at and is not less than 950 ℃.The finishing temperature of determining reducing and rolling during lower than 950 ℃, will be separated out thick niobium compound.Niobium compound does not dissolve in heat treatment process yet, becomes the principal element that reduces hydrogen sulfide corrosion-resistant performance.
Cold bed is cooling:
What determine reducing and rolling unit, below cold bed is set, makes the hollow forging of determining after reducing and rolling enter cold bed, be chilled to following 40 ℃～60 ℃ of Ar3 critical temperature, crystal grain thinning, then directly sends into heat treated reheating furnace, by online thermal treatment save energy.
Pipe processing
Adopt after quenching and the thermal treatment process of 2 tempering, quenching temperature is 910 ℃ ± 30 ℃, and quenchant is oiliness hardening liquid; Tempering temperature, 680～720 ℃ of soaking times 30 minutes～50 minutes, adopts air cooling; Double tempering temperature soaking time 60 minutes～90 minutes at 550 ℃～590 ℃, air cooling.After hollow forging thermal treatment, need be through row secondary sizing and straightening processing, secondary sizing temperature is between 550～600 ℃, and hot straightening temperature, between 500 ℃～540 ℃, is finally detected a flaw.
Quenching technology:
For obtaining tempered martensite, need to quench at austenite region.Determine hollow forging after reducing and rolling and directly enter to be arranged on and determine reducing rolling mill cold bed below, in cold bed windward, be chilled to below Ar3 critical temperature 40 ℃～60 ℃, after sawing, pack into and be located at cold bed reheating furnace below, be heated to the temperature range at 880 ℃～940 ℃.When quenching temperature is higher than 940 ℃, promote grain growing, can cause austenite crystal thick, reduce hydrogen sulfide corrosion-resistant ability; Temperature, lower than 880 ℃, can not get uniform quenching structure, can separate out thick niobium compound, and a part of tissue can likely become ferrite.The object of heating is exactly the temperature contrast of eliminating on steel pipe length direction, homogenizing tissue.
Determine that hollow forging Heating temperature is 910 ℃ ± 30 ℃, be incubated 15 minutes, fully form austenite, quenchant adopts oiliness hardening liquid, to guarantee the speed of cooling of 20 ℃/sec, obtains sufficient martensitic stucture.
For refine austenite crystal grain, after quenching, pipe can be heated again in the austenite territory of 880 ℃～940 ℃, carry out secondary quenching.
A tempering process:
Tempering is being carried out lower than Ac1 critical temperature, fully to obtain tempered martensite, makes steel pipe have high yield ratio, improves the high hydrogen sulfide corrosion-resistant performance of weldless steel tube.
Tempering temperature is controlled at 680 ℃～720 ℃ soaking time 30 minutes～50 minutes, adopts air cooling.
Tempering is to control the significant process that material has the tissue of hydrogen sulfide corrosion-resistant performance and intensity.In 680 ℃～720 ℃ insulations tempering of 30 minutes～50 minutes, can prevent the coarse grains of carbide and separate out, reducing lattice distortion degree.Higher than 720 ℃ or the tempering that exceeds 50 minutes, not only separate out thick carbide, reduce hydrogen sulfide corrosion-resistant performance, and the sosoloid of separating out during 2 tempering reduces, intensity is low.Do not reach 680 ℃ or less than tempering in 30 minutes, can not fully reduce lattice distortion, hydrogen sulfide corrosion-resistant performance is low, and tempering is insufficient, and the sosoloid producing during 2 tempering seldom.
Double tempering technique:
Double tempering temperature soaking time 60 minutes～90 minutes at 550 ℃～590 ℃, adopts air cooling.
550 ℃～590 ℃ temperature, soaking time 60 minutes～90 minutes, the coarsening of the carbide of separating out in the time of suppressing 1 tempering, makes fine acicular carbide separate out to the gap of lattice, and lattice is distorted, and can improve hardness and the intensity of pipe.In 590 ℃ or the tempering that exceeds 90 minutes, separate out thick carbide; Do not reach 550 ℃ or the less than tempering of 60 minutes, fine acicular carbide is separated out insufficient, the hardness of pipe and undercapacity.
Secondary fixed diameter process:
Select rational sizing parameter, the diameter distortion rate of secondary sizing reaches 3%～5%, makes the surface of petroleum casing pipe produce certain residual compressive stress, improves the mechanical property of petroleum casing pipe, improves size and the circularity precision of petroleum casing pipe.
Secondary sizing temperature is controlled within the scope of 550～600 ℃.
Hot straightening technique:
Select best aligning coefficient of draught, can reduce to align the unrelieved stress that machining produces, improve circularity and the linearity of petroleum casing pipe, improve the performance of petroleum casing pipe.This aligning coefficient of draught is generally the weldless steel tube elastic limit distortion of 0.64～0.77 times.
Hot straightening temperature is between 500 ℃～540 ℃.
Adopt the petroleum casing pipe with high-strong toughness of method manufacture of the present invention, its yield strength: more than 897MPa, ultimate strength >=961MPa, impelling strength (longitudinally) >=80J.
The index that the mechanical property of described petroleum casing pipe reaches is as follows:
Yield strength: 897～941MPa
Ultimate strength: >=961MPa
Impelling strength (longitudinally): >=80J
The hydrogen sulfide corrosion-resistant value of measuring with the TM 0177-2005A standard method of NACE: qualified
Unrelieved stress :≤115Mpa
The geometrical dimension of petroleum casing pipe
The limit of error of diameter: 0.995%Dmm～1.01%Dmm
Out of roundness :≤1.1mm
Wall thickness :≤-8.0%t～8.0%t
Straight degree: pipe end≤1.5mm/m, body≤1.5 ‰
Embodiment 1
Manufacturing dimension is that the detailed process of petroleum casing pipe of 244.5 * 11.99mm is as follows:
Adopt sponge iron and steel scrap to do steelmaking feed, with electric arc furnace, be fused into molten steel, after external refining and vacuum outgas, the Chemical Composition that obtains molten steel is by weight percentage: C:0.20%, Si:0.18%, Mn:0.51%, Cr:0.68%, Mo:1.44%, Al:0.02%, Ti:0.017%, V:0.07%, Nb:0.011%, Ca:0.0031%, B:0.0015%, P:0.011%, S:0.001%, N:0.005%, surplus is iron.
12V+1-Mo＝12×0.07+1-1.44＝0.4
Mo-(Cr+Mn)＝1.44-(0.68+0.51)＝0.25。
Above-mentioned high purity steel water continuous casting is become to pipe.Cooled pipe is heated in rotary heating furnace, 1215 ℃ of heating of pipe blank temperature, insulation 11 hours, heat centering temperature is 1140 ℃, adopting Mannesmann's method hot piercing, hot piercing temperature is 1070 ℃, the finishing temperature of retained mandrel rolling and reducing and rolling, tandem rolling is not less than 1014 ℃, the final reducing and rolling temperature of determining is controlled at 962 ℃, more than Ar3 critical temperature.Determine hollow forging after reducing and rolling and directly enter and determine reducing and rolling unit cold bed below, air-cooled to 650-670 ℃, crystal grain thinning.After cooled hollow forging sawing, directly send into heat treated reheating furnace, be heated to 890 ℃ of insulations 15 minutes, carry out quenching heat treatment, quenchant is oiliness hardening liquid, and speed of cooling is 20 ℃/sec.685 ℃ of homogeneous heatings 45 minutes, carry out temper 1 time; 580 ℃ of homogeneous heatings 80 minutes, carry out temper 2 times.At 560 ℃ of second heat sizings, the diameter distortion rate of secondary sizing is controlled at 3.8% left and right.520 ℃ of hot straightenings, aligning coefficient of draught is got the steel tube elastic ultimate deformation of 0.68 times, and finally flaw detection obtains finished product petroleum casing pipe.
The index that the mechanical property of the sleeve pipe obtaining reaches is as follows:
Yield strength: 932MPa
Ultimate strength: 991MPa
Impelling strength (longitudinally): 86J
The hydrogen sulfide corrosion-resistant value of measuring with the TM 0177-2005A standard method of NACE: qualified
Unrelieved stress: 92.3MPa
The geometrical dimension of petroleum casing pipe
Diameter range: 245.64 (D+0.46%D) mm～246.19 (D+0.69%D) mm
Out of roundness :≤0.8mm
Wall thickness :≤-4.9%t～8.2%t
Straight degree: pipe end≤1.2mm/m, body≤1.0 ‰.
Embodiment 2
Manufacturing dimension is that the detailed process of petroleum casing pipe of 244.5 * 11.99mm is as follows:
Adopt sponge iron and steel scrap to do steelmaking feed, with electric arc furnace, be fused into molten steel, after external refining and vacuum outgas, the Chemical Composition that obtains molten steel is by weight percentage: C:0.16%, Si:0.15%, Mn:0.52%, Cr:0.65%, Mo:1.56%, Al:0.02%, Ti:0.004%, V:0.08%, Nb:0.006%, Ca:0.0026%, B:0.0012%, P:0.010%, S:0.003%, N:0.004%, surplus is iron.
12V+1-Mo＝12×0.08+1-1.56＝0.4
Mo-(Cr+Mn)＝1.56-(0.65+0.52)＝0.39。
Above-mentioned high purity steel water continuous casting is become to pipe.Cooled pipe is heated in rotary heating furnace, heating of pipe blank temperature is 1215 ℃, is incubated 13 hours, heat centering temperature is 1140 ℃, adopt Mannesmann's method hot piercing, hot piercing temperature is 1080 ℃, the finishing temperature of retained mandrel rolling and reducing and rolling, tandem rolling is not less than 1010 ℃, and the final reducing and rolling temperature of determining is controlled at 960 ℃, more than Ar3 critical temperature.Determine hollow forging after reducing and rolling and directly enter and determine reducing and rolling unit cold bed below, air-cooled to 650-670 ℃, crystal grain thinning.After cooled hollow forging sawing, directly send into heat treated reheating furnace, be heated to 920 ℃ of insulations 15 minutes, carry out quenching heat treatment, quenchant is oiliness hardening liquid, and speed of cooling is 20 ℃/sec.710 ℃ of homogeneous heatings 40 minutes, carry out temper 1 time; 580 ℃ of homogeneous heatings 80 minutes, carry out temper 2 times.At 560 ℃ of second heat sizings, the diameter distortion rate of secondary sizing is controlled at 3.6%.520 ℃ of hot straightenings, aligning coefficient of draught is the steel tube elastic ultimate deformation of 0.71 times, and finally flaw detection obtains finished product petroleum casing pipe.
The index that the mechanical property of the sleeve pipe obtaining reaches is as follows:
Yield strength: 897MPa
Ultimate strength: 993MPa
Impelling strength (longitudinally): 87J
The hydrogen sulfide corrosion-resistant value of measuring with the TM 0177-2005A standard method of NACE: qualified
Unrelieved stress: 113.9MPa
The geometrical dimension of petroleum casing pipe
Diameter range: 244.77mm (D+0.11%D)～246.23mm (D+0.77%D)
Out of roundness :≤0.8mm
Wall thickness :≤-5.5%t～7.3%t
Straight degree: pipe end≤1.0mm/m, body≤0.8 ‰.
Embodiment 3
Manufacturing dimension is that the detailed process of petroleum casing pipe of 244.5 * 11.99mm is as follows:
Adopt sponge iron and steel scrap to do steelmaking feed, with electric arc furnace, be fused into molten steel, after external refining and vacuum outgas, the Chemical Composition that obtains molten steel is by weight percentage: C:0.19%, Si:0.19%, Mn:0.53%, Cr:0.76%, Mo:1.31%, Al:0.04%, Ti:0.040%, V:0.07%, Nb:0.008%, Ca:0.0015%, B:0.0013%, P:0.008%, S:0.002%, N:0.009%, surplus is iron.
12V+1-Mo＝12×0.07+1-1.31＝0.53
Mo-(Cr+Mn)＝1.31-(0.76+0.53)＝0.02。
Above-mentioned high purity steel water continuous casting is become to pipe.Cooled pipe is heated in rotary heating furnace, heating of pipe blank temperature is 1210 ℃, is incubated 11 hours, heat centering temperature is 1140 ℃, adopt Mannesmann's method hot piercing, hot piercing temperature is 1080 ℃, the finishing temperature of retained mandrel rolling and reducing and rolling, tandem rolling is not less than 1050 ℃, and the final reducing and rolling temperature of determining is controlled at 965 ℃, more than Ar3 critical temperature.Determine hollow forging after reducing and rolling and directly enter and determine reducing and rolling unit cold bed below, air-cooled to 650-670 ℃, crystal grain thinning.After cooled hollow forging sawing, directly send into heat treated reheating furnace, be heated to 900 ℃ of insulations 15 minutes, carry out quenching heat treatment, quenchant is water-based hardening liquid, and speed of cooling is 20 ℃/sec.695 ℃ of homogeneous heatings 45 minutes, carry out temper 1 time; 580 ℃ of homogeneous heatings 80 minutes, carry out temper 2 times.At 560 ℃ of second heat sizings, the diameter distortion rate of secondary sizing is controlled at 4.1%.520 ℃ of hot straightenings, aligning coefficient of draught is the steel tube elastic ultimate deformation of 0.69 times, and finally flaw detection obtains finished product petroleum casing pipe.
The index that the mechanical property of the sleeve pipe obtaining reaches is as follows:
Yield strength: 924MPa
Ultimate strength: 987MPa
Impelling strength (longitudinally): 83J
The hydrogen sulfide corrosion-resistant value of measuring with the TM 0177-2005A standard method of NACE: qualified
Unrelieved stress: 107.5MPa
The geometrical dimension of petroleum casing pipe
Diameter range: 245.71 (D+0.49%D) mm～246.76 (D+0.92%D) mm
Out of roundness :≤0.6mm
Wall thickness :≤-4.5%t～7.0%t
Straight degree: pipe end≤1.2mm/m, body≤1.1 ‰.
Embodiment 4
Manufacturing dimension is that the detailed process of petroleum casing pipe of 244.5 * 11.99mm is as follows:
Adopt sponge iron and steel scrap to do steelmaking feed, with electric arc furnace, be fused into molten steel, after external refining and vacuum outgas, the Chemical Composition that obtains molten steel is by weight percentage: C:0.18%, Si:0.18%, Mn:0.51%, Cr:0.70%, Mo:1.34%, Al:0.030%, Ti:0.020%, V:0.075%, Nb:0.007%, Ca:0.0015%, B:0.0013%, P:0.010%, S:0.004%, N:0.006%, surplus is iron.
12V+1-Mo＝12×0.075+1-1.34＝0.56
Mo-(Cr+Mn)＝1.34-(0.70+0.51)＝0.31。
Above-mentioned high purity steel water continuous casting is become to pipe.Cooled pipe is heated in rotary heating furnace, heating of pipe blank temperature is 1210 ℃, is incubated 13 hours, heat centering temperature is 1135 ℃, adopting Mannesmann's method hot piercing, hot piercing temperature is 1075 ℃, the finishing temperature of retained mandrel rolling and reducing and rolling, tandem rolling is not less than 1060 ℃, the final reducing and rolling temperature of determining is controlled at 970 ℃, more than Ar3 critical temperature.Determine hollow forging after reducing and rolling and directly enter and determine reducing and rolling unit cold bed below, air-cooled to 670-650 ℃, crystal grain thinning.After cooled hollow forging sawing, directly send into heat treated reheating furnace, be heated to 900 ℃ of insulations 15 minutes, carry out quenching heat treatment, quenchant is water-based hardening liquid, and speed of cooling is 20 ℃/sec.700 ℃ of homogeneous heatings 40 minutes, carry out temper 1 time; 580 ℃ of homogeneous heatings 75 minutes, carry out temper 2 times.At 565 ℃ of second heat sizings, the diameter distortion rate of secondary sizing is controlled at 3.9%.525 ℃ of hot straightenings, aligning coefficient of draught is the steel tube elastic ultimate deformation of 0.74 times, and finally flaw detection obtains finished product petroleum casing pipe.
The index that the mechanical property of the sleeve pipe obtaining reaches is as follows:
Yield strength: 921MPa
Ultimate strength: 1013MPa
Impelling strength (longitudinally): 81J
The hydrogen sulfide corrosion-resistant value of measuring with the TM 0177-2005A standard method of NACE: qualified
Unrelieved stress: 97.7MPa
The geometrical dimension of petroleum casing pipe
Diameter range: 245.43 (D+0.38%D) mm～246.26 (D+0.72%D) mm
Out of roundness :≤0.8mm
Wall thickness :≤-5.4%t～6.3%t
Straight degree: pipe end≤1.4mm/m, body≤1.2 ‰.
Embodiment 5
Manufacturing dimension is that the detailed process of petroleum casing pipe of 244.5 * 11.99mm is as follows:
Adopt sponge iron and steel scrap to do steelmaking feed, with electric arc furnace, be fused into molten steel, after external refining and vacuum outgas, the Chemical Composition that obtains molten steel is by weight percentage: C:0.18%, Si:0.15%, Mn:0.55%, Cr:0.72%, Mo:1.46%, Al:0.04%, Ti:0.030%, V:0.09%, Nb:0.011%, Ca:0.0032%, B:0.0015%, P:0.010%, S:0.002%, N:0.007, surplus is iron.
12V+1-Mo＝12×0.09+1-1.46＝0.62
Mo-(Cr+Mn)＝1.46-(0.72+0.55)＝0.19。
Above-mentioned high purity steel water continuous casting is become to pipe.Cooled pipe is heated in rotary heating furnace, heating of pipe blank temperature is 1210 ℃, is incubated 10 hours, heat centering temperature is 1130 ℃, adopting Mannesmann's method hot piercing, hot piercing temperature is 1080 ℃, retained mandrel rolling and reducing and rolling,, tandem rolling finishing temperature be not less than 1020 ℃, the final reducing and rolling temperature of determining is controlled at 960 ℃, more than Ar3 critical temperature.Determine hollow forging after reducing and rolling and directly enter and determine reducing and rolling unit cold bed below, air-cooled to 670-650 ℃, crystal grain thinning.After cooled hollow forging sawing, directly send into heat treated reheating furnace, be heated to 900 ℃ of insulations 15 minutes, carry out quenching heat treatment, quenchant is water-based hardening liquid, and speed of cooling is 20 ℃/sec.690 ℃ of homogeneous heatings 45 minutes, carry out temper 1 time; 580 ℃ of homogeneous heatings 80 minutes, carry out temper 2 times.At 570 ℃ of second heat sizings, the diameter distortion rate of secondary sizing is controlled at 4.2%.530 ℃ of hot straightenings, aligning coefficient of draught is the steel tube elastic ultimate deformation of 0.69 times, and finally flaw detection obtains finished product petroleum casing pipe.
The index that the mechanical property of the sleeve pipe obtaining reaches is as follows:
Yield strength: 905MPa
Ultimate strength: 975MPa
Impelling strength (longitudinally): 89J
The hydrogen sulfide corrosion-resistant value of measuring with the TM 0177-2005A standard method of NACE: qualified
Unrelieved stress: 104.9MPa
The geometrical dimension of petroleum casing pipe
Diameter range: 245.77 (D+0.52%D) mm～246.63 (D+0.87%D) mm
Out of roundness :≤0.7mm
Wall thickness :≤-4.2%t～6.8%t
Straight degree: pipe end≤1.1mm/m, body≤0.9 ‰.
Claims (4)
1. the high-strong toughness petroleum casing pipe of a hydrogen sulfide corrosion-resistant, it is characterized in that, by following compositions, formed by weight percentage: C:0.15～0.20%, Si:0.1～0.2%, Mn:0.4～0.6%, Cr:0.6～0.8%, Mo:1.2～1.6%, Al:0.01～0.05%, Ti:0.002～0.05%, V:0.05～0.10%, Nb:0.005～0.015%, Ca:0.0003～0.005%, B:<0.002%, P≤0.015%, S≤0.005%, N:0.003～0.010%, the Fe of surplus, Mo wherein, V, the addition of Cr and Mn meets 12V+1-Mo >=0, Mo-(Cr+Mn) >=0,
The high-strong toughness petroleum casing pipe of above-mentioned hydrogen sulfide corrosion-resistant is manufactured by following method:
(1) batching is smelted:
Adopt sponge iron and steel scrap to do steelmaking feed, with the eccentric stove of electric arc, be fused into molten steel, through external refining and vacuum outgas method, then process through Ca, obtain manufacturing the molten steel of petroleum casing pipe;
(2) above-mentioned continuous casting of molten steel becomes pipe, after pipe is cooling, pack process furnace into, pipe is not less than 10 hours at 1210-1220 ℃ of heating and thermal insulations, the heat centering temperature of pipe is 1120-1150 ℃, pipe hot piercing temperature is 1050～1100 ℃, the finishing temperature of tandem rolling is not less than 1000 ℃, and the finishing temperature of determining reducing and rolling is not less than 950 ℃;
Pipe add thermal recovery rotary heating furnace, rotary heating furnace is divided into 7 control regions along the circumferential direction, preheating section accounts for a control region, and heating zone accounts for four control regions, and soaking zone accounts for a control region, discharging section accounts for a control region, wherein, the temperature of preheating section is 540 ± 20 ℃, and the temperature of heating zone is 1210 ± 5 ℃, soaking zone temperature is 1215 ± 5 ℃, and the Heating temperature curve of pipe is the progressive para-curve of 1215 ℃;
(3) complete the hollow forging of determining reducing and rolling and on cold bed, be cooled to 650-670 ℃, then adopt the thermal treatment process of quenching and combining with 2 tempering, be heated to after quenching temperature, be incubated after 15 minutes, carry out quench treatment, quenchant is oiliness hardening liquid, and quenching temperature is 910 ℃ ± 30 ℃; Tempering temperature is incubated 30 minutes at 680～720 ℃～and 50 minutes, adopt air cooling, double tempering temperature is incubated 60 minutes at 550 ℃～590 ℃～and 90 minutes, air cooling; After petroleum casing pipe thermal treatment, through second heat sizing and hot straightening, process the high-strong toughness petroleum casing pipe that obtains hydrogen sulfide corrosion-resistant, second heat sizing temperature is between 550～600 ℃, and hot straightening temperature is between 500 ℃～540 ℃.
2. the high-strong toughness petroleum casing pipe of hydrogen sulfide corrosion-resistant according to claim 1, is characterized in that, hardening liquid ensures the speed of cooling of 20 ℃/sec, obtains sufficient martensitic stucture.
3. the high-strong toughness petroleum casing pipe of hydrogen sulfide corrosion-resistant according to claim 2, is characterized in that, the diameter distortion rate of second heat sizing is 3%～5%.
4. the high-strong toughness petroleum casing pipe of hydrogen sulfide corrosion-resistant according to claim 3, is characterized in that, hot straightening coefficient of draught is the weldless steel tube elastic limit distortion of 0.64～0.77 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210120547.6A CN102618791B (en) | 2012-04-23 | 2012-04-23 | High strength and ductility oil casing with hydrogen sulfide corrosion resistance and manufacturing method for oil casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210120547.6A CN102618791B (en) | 2012-04-23 | 2012-04-23 | High strength and ductility oil casing with hydrogen sulfide corrosion resistance and manufacturing method for oil casing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102618791A CN102618791A (en) | 2012-08-01 |
| CN102618791B true CN102618791B (en) | 2014-08-06 |
Family
ID=46558989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210120547.6A Expired - Fee Related CN102618791B (en) | 2012-04-23 | 2012-04-23 | High strength and ductility oil casing with hydrogen sulfide corrosion resistance and manufacturing method for oil casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102618791B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103305777B (en) * | 2013-06-14 | 2015-10-21 | 攀钢集团成都钢钒有限公司 | A kind of Large Diameter and Very thick-walled seamless steel pipes and manufacture method thereof |
| JP5971435B1 (en) * | 2014-09-08 | 2016-08-17 | Ｊｆｅスチール株式会社 | High strength seamless steel pipe for oil well and method for producing the same |
| WO2017050229A1 (en) * | 2015-09-24 | 2017-03-30 | 宝山钢铁股份有限公司 | Process for on-line quenching of seamless steel tube using waste heat and manufacturing method |
| CN106555113B (en) | 2015-09-24 | 2018-09-04 | 宝山钢铁股份有限公司 | A kind of high-strength tenacity seamless steel pipe and its manufacturing method |
| WO2017050228A1 (en) * | 2015-09-24 | 2017-03-30 | 宝山钢铁股份有限公司 | Method for manufacturing bainite high-strength seamless steel tube, and bainite high-strength seamless steel tube |
| JP6801376B2 (en) * | 2016-11-01 | 2020-12-16 | 日本製鉄株式会社 | Seamless steel pipe for high-strength low-alloy oil wells and its manufacturing method |
| CN108393355A (en) * | 2018-03-26 | 2018-08-14 | 天津商业大学 | A kind of manufacturing method of oil/gas well novel seamless steel tube |
| CN109161788B (en) * | 2018-08-06 | 2022-03-22 | 中国石油天然气集团有限公司 | High-temperature-resistant petroleum casing pipe for thermal recovery well of hot steam injection thickened oil and manufacturing method thereof |
| CN111549286B (en) * | 2020-06-22 | 2021-10-15 | 中南大学 | Easily-welded ultrahigh-strength high-toughness steel and preparation method thereof |
| CN111665293B (en) * | 2020-07-20 | 2023-12-19 | 浙江树人学院（浙江树人大学） | Eddy current detection method for defects of double-layer pipe column of weak magnetic oil pipe of high-sulfur-content gas field |
| CN111979498B (en) * | 2020-09-23 | 2021-10-08 | 达力普石油专用管有限公司 | Sulfide stress corrosion resistant oil sleeve material and preparation method thereof |
| CN112795842B (en) * | 2020-12-25 | 2022-05-13 | 鞍钢股份有限公司 | Steel for submarine quick connection pipeline and production method thereof |
| CN114921719A (en) * | 2022-04-15 | 2022-08-19 | 山东威玛装备科技股份有限公司 | High-strength drill rod for sulfur-containing oil and gas field |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1924068A (en) * | 2005-08-30 | 2007-03-07 | 宝山钢铁股份有限公司 | Oil well tube resisting stress corrosion of H2S and manufacture method thereof |
| CN101413088A (en) * | 2008-12-02 | 2009-04-22 | 天津商业大学 | Sulfurated hydrogen stress etching-resisting petroleum casing pipe and manufacturing method thereof |
-
2012
- 2012-04-23 CN CN201210120547.6A patent/CN102618791B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1924068A (en) * | 2005-08-30 | 2007-03-07 | 宝山钢铁股份有限公司 | Oil well tube resisting stress corrosion of H2S and manufacture method thereof |
| CN101413088A (en) * | 2008-12-02 | 2009-04-22 | 天津商业大学 | Sulfurated hydrogen stress etching-resisting petroleum casing pipe and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102618791A (en) | 2012-08-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102618791B (en) | High strength and ductility oil casing with hydrogen sulfide corrosion resistance and manufacturing method for oil casing | |
| CN101413088B (en) | Sulfurated hydrogen stress etching-resisting petroleum casing pipe and manufacturing method thereof | |
| AU2018393178B2 (en) | Method for fabricating low-cost, short-production-cycle wear-resistant steel | |
| US10851432B2 (en) | Ultra-high strength and ultra-high toughness casing steel, oil casing, and manufacturing method thereof | |
| CN101368251B (en) | Steel plate for large-thickness hydrogen-contacting equipment and its production technology | |
| CN107208212B (en) | Thick-walled high-toughness high-strength steel plate and method for producing same | |
| CN103540838A (en) | Steel plate for low-temperature vessel and production method thereof | |
| CN103589970A (en) | Bar material for non-quenched and tempered shaft part and manufacturing process of bar material | |
| CN103255345B (en) | 80ksi-steel-grade hydrogen sulfide stress corrosion resistant petroleum casing pipe and manufacturing method thereof | |
| CN112226676B (en) | Low-cost L320MS/X46MS hot-rolled steel strip for hydrogen sulfide corrosion resistant welded pipe and manufacturing method thereof | |
| CN108004462B (en) | Oil casing pipe capable of resisting hydrogen sulfide stress corrosion cracking and manufacturing method thereof | |
| CN109913757A (en) | A kind of corrosion-resistant high anti-extrusion petroleum casing pipe and preparation method thereof | |
| CN104357756A (en) | Longitudinally-welded petroleum casing pipe capable of resisting stress corrosion of hydrogen sulfide and manufacturing method thereof | |
| CN102747290A (en) | Economical wear-resistant steel and manufacturing method thereof | |
| WO2014114158A1 (en) | High strength steel sheet and manufacturing method therefor | |
| JP5262740B2 (en) | Case-hardened steel with excellent coarse grain prevention and fatigue characteristics during carburizing and its manufacturing method | |
| CN107385349B (en) | The seamless steel pipe and preparation method for having high-intensity and high-tenacity and anti-SSC performance | |
| CN104294173A (en) | Niobium-containing steel for high-speed train axle | |
| CN104372155A (en) | Heat treatment process of high-speed train axle containing niobium | |
| JP6468301B2 (en) | Material for steel pipe for high strength oil well and method for producing steel pipe for high strength oil well using the material | |
| CN111850399A (en) | Corrosion-resistant plastic die steel with good wear resistance and preparation method thereof | |
| CN102409241A (en) | Steel for oil casing pipe, oil casing pipe and manufacturing methods thereof | |
| CN103627962A (en) | Seamless steel pipe for thickened oil thermal production well and preparation method thereof | |
| CN101871081B (en) | Steel for low-steel-grade continuous oil pipe and manufacturing method thereof | |
| CN104694821A (en) | V-contained and H2S corrosion resistive L360QS seamless pipeline tube and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 Termination date: 20160423 |